Texture discrimination by Gabor functions
Biological Cybernetics
Digital halftoning
A simple and efficient error-diffusion algorithm
Proceedings of the 28th annual conference on Computer graphics and interactive techniques
Digital Color Halftoning
Digital Color Imaging Handbook
Digital Color Imaging Handbook
The steerable pyramid: a flexible architecture for multi-scale derivative computation
ICIP '95 Proceedings of the 1995 International Conference on Image Processing (Vol. 3)-Volume 3 - Volume 3
Improving mid-tone quality of variable-coefficient error diffusion using threshold modulation
ACM SIGGRAPH 2003 Papers
Physically Based Rendering: From Theory to Implementation
Physically Based Rendering: From Theory to Implementation
Practical Handbook on Image Processing for Scientific and Technical Applications, Second Edition
Practical Handbook on Image Processing for Scientific and Technical Applications, Second Edition
Improved edge enhanced error diffusion based on first-order gradient shaping filter
IEA/AIE'2004 Proceedings of the 17th international conference on Innovations in applied artificial intelligence
Edge-Enhanced Error Diffusion Halftoning using Human Visual Properties
ICHIT '06 Proceedings of the 2006 International Conference on Hybrid Information Technology - Volume 01
ACM SIGGRAPH 2008 papers
IEEE Transactions on Visualization and Computer Graphics
Halftoning via direct binary search using analytical and stochastic printer models
IEEE Transactions on Image Processing
Image quality assessment: from error visibility to structural similarity
IEEE Transactions on Image Processing
Example-based stippling using a scale-dependent grayscale process
NPAR '10 Proceedings of the 8th International Symposium on Non-Photorealistic Animation and Rendering
Extended papers from NPAR 2010: Scale-dependent and example-based grayscale stippling
Computers and Graphics
Structure-preserving stippling by priority-based error diffusion
Proceedings of Graphics Interface 2011
Dithering by Differences of Convex Functions
SIAM Journal on Imaging Sciences
Point sampling with general noise spectrum
ACM Transactions on Graphics (TOG) - SIGGRAPH 2012 Conference Proceedings
ACM Transactions on Graphics (TOG)
ACM Transactions on Graphics (TOG)
Structure and aesthetics in non-photorealistic images
Proceedings of Graphics Interface 2013
Parallel structure-aware halftoning
Multimedia Tools and Applications
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We present an original error-diffusion method which produces visually pleasant halftone images while preserving fine details and visually identifiable structures present in the original images. Our method is conceptually simple and computationally efficient. The source image is analyzed, and its local frequency content is detected. The main component of the frequency content (main frequency, orientation and contrast) serve as lookup table indices to a pre-calculated database of modifications to a standard error diffusion. The modifications comprise threshold modulation and variation of error-diffusion coefficients. The whole system is calibrated in such a way that the produced halftone images are visually close to the original images (patches of constant intensity, patches containing sinusoidal waves of different frequencies/orientations/contrasts, as well as natural images of different origins). Our system produces images of visual quality comparable to that presented in [Pang et al. 2008], but much faster. When processing typical images of linear size of several hundreds of pixels, our error-diffusion system is two to three orders of magnitude faster than [Pang et al. 2008]. Thanks to its speed combined with high visual quality, our error-diffusion algorithm can be used in many practical applications which may require digital halftoning: printing, visualization, geometry processing, various sampling techniques, etc.